Manley Performance Big Block Chevrolet Race Master Valves 11/32" Stem Diameters 1.880

Race Master Valves 11/32" Stem Diameters

- XH-426 Stainless Exhaust Material
- Chrome Stems and Hard Tips
- Swirl Polished and Fully Machined
- 11/32" Stems for Improved Flow, Lighter Weight

Specs:

Type: Exhaust

Head Diameter: 1.880

Stem Diameter: .3415

Installed Height: Stock

O/A Length: 5.422

Tip Length: .250

Underhead Angle/Radius: 10° x 3/8"

Margin: .075

Seat Width: .100

Top of Head: 6° Dish

Weight/ Grams: 122

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